45313809 has 4 divisors (see below), whose sum is σ = 60418416. Its totient is φ = 30209204.

The previous prime is 45313777. The next prime is 45313831. The reversal of 45313809 is 90831354.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45313809 - 2⁵ = 45313777 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45313809.

It is not an unprimeable number, because it can be changed into a prime (45313409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7552299 + ... + 7552304.

It is an arithmetic number, because the mean of its divisors is an integer number (15104604).

Almost surely, 2^45313809 is an apocalyptic number.

It is an amenable number.

45313809 is a deficient number, since it is larger than the sum of its proper divisors (15104607).

45313809 is a wasteful number, since it uses less digits than its factorization.

45313809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15104606.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 45313809 is about 6731.5532382950. The cubic root of 45313809 is about 356.5142197465.

The spelling of 45313809 in words is "forty-five million, three hundred thirteen thousand, eight hundred nine".